80868537 has 10 divisors (see below), whose sum is σ = 120803738. Its totient is φ = 53912304.

The previous prime is 80868533. The next prime is 80868577. The reversal of 80868537 is 73586808.

It can be written as a sum of positive squares in only one way, i.e., 71723961 + 9144576 = 8469^2 + 3024^2 .

It is not a de Polignac number, because 80868537 - 2² = 80868533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80868492 and 80868501.

It is not an unprimeable number, because it can be changed into a prime (80868533) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 499108 + ... + 499269.

Almost surely, 2^80868537 is an apocalyptic number.

It is an amenable number.

80868537 is a deficient number, since it is larger than the sum of its proper divisors (39935201).

80868537 is an equidigital number, since it uses as much as digits as its factorization.

80868537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998389 (or 998380 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 80868537 is about 8992.6935341976. The cubic root of 80868537 is about 432.4406672369.

The spelling of 80868537 in words is "eighty million, eight hundred sixty-eight thousand, five hundred thirty-seven".